Need new solutions correct Decide whether each of the following statements is true about chitin deacetylase.It tremendously increases the stability of chitin, so that chitin has a lifetime as much as a 1 million timeslonger.It's a medium-sized molecule, with molecular weight around 50gmolIt's made by DNA polymerase, in the nucleus.If you were to write a chemical equation for certain biochemical reactions of chitin, chitin deacetylasewould appear on both sides.truefalsetruefalsetruefalseO trueO false

Chitin deacetylase is an enzyme found in a wide range of microorganisms, including fungi and…

Answered: Decide whether each of the following…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter4: Cells

Section: Chapter Questions

Problem 1ITD

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Equilibrium constants are always dependent upon temperature. In determining equilibrium constants for biochemical reactions the equilibrium constant also depends upon ion concentration and proton concentration. Write down an equation in differential form that describe the dependence of an equilibrium constant K for a protein binding to DNA, where the equilibrium constant, K is a function of Temperature, [NaCI], and [H*], i.e. dK(T, [NaCl], [H*]).
Many studies that have revealed important biochemical processes in human beings, including those that underpin the development of new drugs, have been conducted in other organisms. These organisms include mammals such as mice and rats but also extend to single-celled organisms such as yeast. Why is this approach often productive?
Gout is a medical condition usually caused by a deficiency of the salvage enzyme hypoxanthine-guanine phosphoribosyltransferase. Uric acid accumulates in the joints and causes pain, inflammation, and in advanced disease gouty tophi. Allopurinol, an inhibitor of the enzyme xanthine oxidase, is used to treat chronic gout. Explain briefly the biochemical basis for this treatment.
Human insulin is prodụced as a recombinant protein in the yeast Saccharomyces cerevisiae The protein is extracted and purified for the treatment of diabetes -a $32 billion industry! For efficacy, insulin must be modified by the addition of oligosaccharyl (sugar) groups If you were a scientist working on this project, how would you isolate the glycosylated insulin from the un- glycosylated forms?
Chart is Given for you: Below is a chart of values for actual enzymes. Enzyme Km (M) kcat (1/s)Chymotrypsin 1.5 × 10^−2 0.14Pepsin 3.0 × 10^−4 0.5Tyrosyl-tRNA synthetase 9.0 × 10^−4 7.6Ribonuclease 7.9 × 10^−3 7.9 × 10^2Carbonic anhydrase 2.6 × 10^−2 4.0 × 10^5Fumarase 5.0 × 10^−6 8.0 × 10^2 Assume the enzyme concentration is equal across all samples (and is equal to 1). (Answer a and b only)a. Which enzyme will have the highest V0 at very high substrate concentrations? (1 M). Why? b. Which will have the highest V0 at very low substrate concentrations (5.0 × 10^−12). Why?
Why is ti advantageous for a cell to expend metabolic energy to polymerize gulucose molecule.?
You are interested in purifying an enzyme X and decide to use an affinity chromatography followed by an enzymatic assay. You obtain the following data: Total volume of [protein] the sample (ml) (mg/mL) (U) |Total activity Sample name Specific activity |(U/mg) |Affinity | chromatography 2 0.12 5000 20833 You have obtained a 10X fold purification and a yield of 10% at the Affinity step. What was the protein concentration of your crude lysate sample, if its volume was 15 mL? Detail your answer by showing the calculations, and do not forget the UNITS!
under certain conditions alpha helical bundles can form and can facilitate protein insertion into membranes. discuss how they coudl achieve this at a biochemical level?
Growth of yeast cells In a controlled laboratory experiment, yeast cells are grown in an automated cell culture system that counts the number P of cells present at hourly intervals. The num- ber after t hours is shown in the accompanying figure. 250 200 150 100 50 0123456 7 a. Explain what is meant by the derivative P'(5). What are its units? b. Which is larger, P'(2) or P'(3)? Give a reason for your answer.
A synthetic substrate, the para-nitrophenylacetate (PNPA), is used to monitor enzyme activity of protein P. The product of the hydrolysis reaction absorbs at 410 nm with a molar extinction coefficient of 4 000 M-¹.cm-¹. 1- Write the reaction catalyzed by the protease P using the pNPA substrate. 2- The enzyme extract is too concentrated and a 1/300 dilution is needed for enzyme tests. Considering that you would need at least 600 µL of diluted enzyme extract for activity tests, indicate which volume of buffer and enzyme extract you must use for the dilution.
The compound below, doxorubicin, is a substrate for p-glycoprotein. Cancer cells with a higher expression of P-gp (more P-gp protein per cell) than normal cells were treated with doxorubicin. What would be the expected observation? o= 0= OH O OH HCI OH -OH NH₂ & OH more doxorubicin inside the cell doxorubicin would be oxidized doxorubicin would have more cytotoxic effect on these cancer cells less doxorubicin inside the cell
NH₂ CH3 Methyltransferases NH₂ OH OH S-Adenosylmethionine (SAM) Transamination Phosphate transfer Protein Acetyl transfer Transmethylation CH3 DNÁ CH3 NH₂ What metabolic reaction is best represented by this chemical equation? SAH-Hydrolase (SAHase) NH₂ OH OH S-Adenosyl-L-Homocysteine (SAH) I но. #M OH OH Adenosine NH₂ NH₂ SH Homocysteine

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